MichaelMeissner

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    • MichaelMeissner
      Well maybe it can handle it, maybe not. But I suspect it may be a lot of work. If you aren't interested in doing the work and learning stuff, etc. it may be better to buy something off the shelf that already has most of the functionality you want.
    • MichaelMeissner
      The Voyager Sailing Drones are a long-term hobby project to develop ocean-going autonomous sailing drones. They are 4 feet and 6 feet in length, constructed using fibreglass over foam core, with a central stringer and keel encasement, similar to...
    • MichaelMeissner
      I suspect the Teensy just does not have to power to record Full HD by reading the camera and writing to the SD card. Maybe it can handle it, but I have my doubts. But an Arduocam does have a 2MP sensor and evidently you can control it from an...
    • MichaelMeissner
      Or as I said, use a Teensy 4.0 or 4.1 for the secondary processor. That way you don't have deal with the issues of the differences. That being said, at the Arduino level things are pretty much the same thing, but of course when you are dealing...
    • MichaelMeissner
      I tend to think that having multiple processors of different types will add to your complexity. You will need to deal with various incompatibilities. I would think if you are going with multiple processors, it may be better to use a Teensy 4.0...
    • MichaelMeissner
      Unfortunately, MTP is not yet included in the standard Teensy libraries. You have to download the MTP_t4 library from: https://github.com/WMXZ-EU/MTP_t4 I modified the mtp_example program as follows: // From...
    • MichaelMeissner
      The ST7789_t3.h include file comes from the ST7735_t3 library (https://github.com/PaulStoffregen/ST7735_t3). I would imagine that it comes from the standard Teensy installation. If not, you would need to install it in your Libraries directory.
    • MichaelMeissner
      I think I saw h4n0nnym0u5e in another thread talk about their/her/his media player starting to copy the SD file into memory, and play the file from there. I could be wrong about it.
    • MichaelMeissner
      If you notice, many of the 128x128 displays have a micro SD card reader, and a separate pin that is the CS pin for the SD card. Those displays need to MISO so you can read data from the SD card. Some of the 240x240 displays have a SD card...
    • MichaelMeissner
      FWIW, the displays used for Uncanny Eyes do not send information back to the Teensy (i.e. having a MISO pin, which would be pins 12 and 1). Thus, while it is a valid concern in general, it isn't an issue in this particular case. When I wire...
    • MichaelMeissner
      I can't help you with the specifics, but all 3 of the Teensies currently available (Teensy 4.0, Teensy 4.1, and the Teensy MicroMod from Sparkfun all use the same processor inside. The memory provided with the Teensy, the form factor, and the...
    • MichaelMeissner
      I don't think there is an official connector. In the past there have been PCB boards designed to bring out these solder pads, and a lot of people just soldered wires to the pads. My interest in the pads faded when the Teensy 4.1 came out...
    • MichaelMeissner
      Of course, see my original post. This can be an expensive hobby. Sorry to hear about your soldering trials.
    • MichaelMeissner
      In the past, I believe I've used that combination. I haven't used the prop shield in awhile but I never used the motion sensor, just the sound, flash memory, and neopixel/dotstar voltage level shifters. As I understand it, the featherwing...
    • MichaelMeissner
      I haven't had to cut the solder joint between VUSB and VIN.
    • MichaelMeissner
      They look correct, with the proviso I've never used the 3rd SPI bus that is setup for wiring a SD card. I usually connect the BL pin to 3.3v. In theory, it should handle not being connected, but I figure it is better to be safe. Sure, but note...
    • MichaelMeissner
      It depends. It is somewhat messy. My sources are in a git tree. There are 2 active branches. Meissner2 branch which has my modifications: https://github.com/MichaelMeissner/TeensyEyes/tree/meissner2 Main branch, which is a copy of Chris's...
    • MichaelMeissner
      And if you figure the 1.7 time into your time lines, it still will be 1.7 times that. :cool:
    • MichaelMeissner
      Each display's CS pin should connect to a separate pin, and then in config.h you edit the code to list that pin. If the device doesn't have a CS pin, then you would put -1 for the CS pin. Some of the square 240x240 displays don't have CS pins...
    • MichaelMeissner
      When you are trying new cards, note that cards that are equal to or more than 64GB use the ExFat file system, compared to the traditional FAT32 filesystem (with VFAT overlaid). Perhaps, ExFat cards are read faster than FAT32. Perhaps not. If...
    • MichaelMeissner
      If you can live with 3.7-4.2 volt power when you are battery powered, some other alternatives include: 1) Use the Adafruit teensy featherwing adapter (https://www.adafruit.com/product/3200). If you use long male pins or stacking headers with...
    • MichaelMeissner
      Have you tried the MQSR/MQSL pins (10/12) on the Teensy 4.0 and 4.1? The problem is those pins are used by the primary SPI bus, but you could use the 2nd SPI if you have a display (note, on the Teensy 4.0, you need to solder wires for the 2nd...
    • MichaelMeissner
      Typically you want to use code like: while (!Serial && millis () < 3000) ; This will wait up to 3 second for the USB to be connected, and if not continue on. Otherwise, it will hang forever until you connect the USB cable.
    • MichaelMeissner
      I'll try to expand it later, but there are different Teensy Eyes, based on what display you have. With the original 128x128 TFT LCD displays (that you have) you want a variant of the original code. Look for the example...
    • MichaelMeissner
      Because proto supplies does the hand soldering, it won't scale up for large purchases, but they do offer Teensy 4.1's with the network headers, and various PSram/flash chips soldered in: https://protosupplies.com/product/teensy-4-1-fully-loaded/...
    • MichaelMeissner
      You would want to get a 3 pole extension cord, not a 4 pole extension cord. What you want to do is search for "TRS 3.5mm extension cord". If you can only get 4 pole extension cords, I would imagine you want to get a converter plug. TS, TRS...
    • MichaelMeissner
      FWIW, I figured out what the problem was with github. I had been accessing github via https, and it was relying on using password authentication (which was recently turned off for security reasons). I re-registered one of my ssh keys with them...
    • MichaelMeissner
      MichaelMeissner reacted to veroelectric's post in the thread NEW Teensy 3.2s for Sale with Like Like.
      Hello, We stockpiled a large number of 3.2s when the writing was on the wall for the end of the 3.2 and needed to have a buffer to port over to the 4.0. Now that we're on the 4.0, we still have quite a few new 3.2s left over. Need to get an...
    • MichaelMeissner
      I had integrated some sound support in my github files (note, I have't pushed binary sounds I created yet), but evidently github turned off svn (subversion) support today and I can no longer do a git push to update the remote directory. This...
    • MichaelMeissner
      I really wish the MTP support libraries would get folded into the Teensy base. You need to download KurtE or WMXZ's MTP support libraries from: https://github.com/WMXZ-EU/MTP_t4 https://github.com/KurtE/MTP_Teensy Then you need to build your...
    • MichaelMeissner
      The audio adapter's SD card uses completely separate pins than the built-in SD card, and they are on separate SPI buses. I would expect the built-in SD card to be faster than the audio adapter, since the built-in SD card can transmit 4 bits at a...
    • MichaelMeissner
      Ummm, you should be able to use I2C with pins 18/19 with the audio board, as long as you don't use a device that uses the 2 addresses: 0x0a for the SGTL5000 and 0x1a for the WM8731 that the audio board uses. I know I've used other I2C devices...
    • MichaelMeissner
      MichaelMeissner replied to the thread EXTMEM and playmem.
      I discovered that the Teensy 4.0 did not have enough space to hold all of the eye definitions, but Teensy 4.1 does. Obviously if you have sounds, it might eat into the space. In theory, it would be nice if we could be more dynamic, and read the...
    • MichaelMeissner
      MichaelMeissner reacted to jrraines's post in the thread EXTMEM and playmem with Like Like.
      Last year I was trying to play music while running Chris' uncanny eyes on a T4.1 and gave up because the sound was stuttery. I probably went wrong in not paying more attention to advice I got from smarter people here. This year I thought I'd...
    • MichaelMeissner
      MichaelMeissner replied to the thread EXTMEM and playmem.
      Cool. I haven't been doing much Teensy stuff recently, but I always wanted to add sounds and such to it, and I was just thinking of adding a dfplayer chip to do the sound. If you feel inclined to, it would be nice if you published your code for...
    • MichaelMeissner
      Still images are good. Timing of the LCD is good. But when you want to move things around and show some real time values in the screen. it stars flickering. Because ESP32 uses LCD with DMA. There is one Framebuffer in the code. So you are using...
    • MichaelMeissner
      I haven't really done any microprocessor coding in quite some time. I did buy a Qualia and 2 displays, but I haven't done anything other than run the initial rainbow demo.
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